import java.util.Scanner;

public class Main1626 {
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        int a=sc.nextInt();
        int b=sc.nextInt();
        int c=sc.nextInt();
        int x=(a+b+c)/3;
        if (x>90){
            System.out.println("beijing");
        }else {
            System.out.println("nanjing");
        }
    }
}
